CVE-2021-3513

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{"affected": [{"affectedData": [{"product": "keycloak", "vendor": "n/a", "versions": [{"status": "affected", "version": "Fixed in keycloak v13.0.0."}]}], "source": "secalert@redhat.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:redhat:keycloak:*:*:*:*:*:*:*:*", "matchCriteriaId": "6C59F338-CA05-4F1D-84DA-246111636A0E", "versionEndExcluding": "13.0.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "A flaw was found in keycloak where a brute force attack is possible even when the permanent lockout feature is enabled. This is due to a wrong error message displayed when wrong credentials are entered. The highest threat from this vulnerability is to confidentiality."}, {"lang": "es", "value": "Se ha encontrado un fallo en keycloak por el que es posible realizar un ataque de fuerza bruta incluso cuando la funci\u00f3n de bloqueo permanente est\u00e1 habilitada. Esto es debido a un mensaje de error que es mostrado cuando son introducidos credenciales incorrectas. La mayor amenaza de esta vulnerabilidad es la confidencialidad."}], "id": "CVE-2021-3513", "lastModified": "2026-06-17T04:05:16.150", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2022-08-22T15:15:13.420", "references": [{"source": "secalert@redhat.com", "tags": ["Vendor Advisory"], "url": "https://access.redhat.com/security/cve/CVE-2021-3513"}, {"source": "secalert@redhat.com", "tags": ["Issue Tracking", "Vendor Advisory"], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1953439"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "https://access.redhat.com/security/cve/CVE-2021-3513"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Issue Tracking", "Vendor Advisory"], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1953439"}], "sourceIdentifier": "secalert@redhat.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-522"}], "source": "secalert@redhat.com", "type": "Secondary"}, {"description": [{"lang": "en", "value": "CWE-209"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"acknowledgement": "Red Hat would like to thank Micha\u0142 Knapik & Peter Nicholson (u2i) for reporting this issue.", "affected_release": [{"advisory": "RHSA-2021:3534", "cpe": "cpe:/a:redhat:red_hat_single_sign_on:7", "package": "keycloak", "product_name": "Red Hat Single Sign-On 7.4.9", "release_date": "2021-09-14T00:00:00Z"}, {"advisory": "RHSA-2021:3527", "cpe": "cpe:/a:redhat:red_hat_single_sign_on:7::el6", "package": "rh-sso7-keycloak-0:9.0.15-1.redhat_00002.1.el6sso", "product_name": "Red Hat Single Sign-On 7.4 for RHEL 6", "release_date": "2021-09-14T00:00:00Z"}, {"advisory": "RHSA-2021:3528", "cpe": "cpe:/a:redhat:red_hat_single_sign_on:7::el7", "package": "rh-sso7-keycloak-0:9.0.15-1.redhat_00002.1.el7sso", "product_name": "Red Hat Single Sign-On 7.4 for RHEL 7", "release_date": "2021-09-14T00:00:00Z"}, {"advisory": "RHSA-2021:3529", "cpe": "cpe:/a:redhat:red_hat_single_sign_on:7::el8", "package": "rh-sso7-keycloak-0:9.0.15-1.redhat_00002.1.el8sso", "product_name": "Red Hat Single Sign-On 7.4 for RHEL 8", "release_date": "2021-09-14T00:00:00Z"}], "bugzilla": {"description": "keycloak: Brute force attack is possible even after the account lockout", "id": "1953439", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1953439"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.5", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N", "status": "verified"}, "cwe": "CWE-522", "details": ["A flaw was found in keycloak where a brute force attack is possible even when the permanent lockout feature is enabled. This is due to a wrong error message displayed when wrong credentials are entered. The highest threat from this vulnerability is to confidentiality.", "A flaw was found in keycloak where a brute force attack is possible even when the permanent lockout feature is enabled. This is due to a wrong error message displayed when wrong credentials are entered. The highest threat from this vulnerability is to confidentiality."], "name": "CVE-2021-3513", "public_date": "2021-04-26T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2021-3513\nhttps://nvd.nist.gov/vuln/detail/CVE-2021-3513"], "threat_severity": "Moderate"}

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